• 2023-07-04
• 819
• 5 Comments

How to control the size of plastic precision injection mold

Because there are great differences in the market demand for molds and mold products, there are many types, there are great changes in shape, size, materials, structure, etc., so the production of molds and products put forward high requirements, and how to effectively control the size of plastic precision injection molds is the first problem we must solve.

1. First of all, we must have a full understanding of the user's technical requirements for the structure, material, hardness, accuracy and other aspects of the plastic precision injection mold, including whether the shrinkage of the formed plastic parts is correct, whether the three-dimensional size of the product is complete, and whether the treatment is reasonable.

2. The parts that have an impact on the appearance, such as shrinkage holes, flow marks, die skew, welding lines and cracks, etc., should be fully considered for injection products.

3. Under the premise of not affecting the function and pattern shape of injection molded products, simplify the processing method of plastic precision injection moulds as much as possible.

4. Whether the selection of parting surface is appropriate, and whether the deburring treatment of mold processing, molding appearance and molding parts is prudent.

5. Whether the pushing method of plastic precision injection mold is suitable, whether the pushing rod, pushing plate, pushing sleeve or other methods are used, and whether the position of the pushing rod and unloading plate is suitable.

6. Whether the core pulling mechanism of the plastic precision injection mold is appropriate, whether the action is flexible and reliable, should ensure that there is no stuck phenomenon.

7. What method of mold temperature control is more suitable for plastic products, what structure ring system is used in coolant, and whether the size, quantity and position of coolant holes are appropriate and so on.

8. Gate form, feed path and feed port size, gate location and size are appropriate.

9. The influence of heat treatment deformation on various components and die cores and whether the selection of standard parts is appropriate.

10. Whether the injection volume, injection pressure and clamping force of the injection molding machine are sufficient, and whether the size of the injection gate R and the gate cover hole match.